Questions related to extensions or plugins that enable, disable or extend the functionality of Mozilla Firefox

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241
votes
3answers
90k views

How can I simulate a slow connection, or limit the bandwidth that Firefox can use? [closed]

Is there a way I can simulate various connection speeds from within Firefox? I need to be able to check http://localhost with varying speeds. I know there are standalone applications that can do ...
49
votes
4answers
17k views

What's the difference between Vimperator and Pentadactyl?

I've been using vimperator for a few months and loving it (although it makes it hard for me to go back to primitive mousery on others' computers). I've seen that there's a fork called Pentadactyl, but ...
46
votes
6answers
113k views

What is the “Google Update” Firefox add-on?

Browsing through Firefox's Add-ons list, I've discovered that there is one named Google Update, which I don't remember installing. How did it get on Firefox's list of installed Add-ons, or plugins, ...
29
votes
3answers
21k views

Is there a way to indicate which Firefox tab is making sounds?

I am essentially asking for a Firefox equivalent to the Chrome extension called MuteTab - a way to identify which tabs are making sounds and then mute them accordingly. Is there a such extension for ...
24
votes
4answers
2k views

How do I prevent pages I visit from overriding selected Firefox shortcut keys?

In Firefox, how can I prevent pages from overriding Firefox built-in keyboard shortcuts through Javascript on a per-key basis? Preferably on a per-site basis, too? The most frustrating override is the ...
20
votes
2answers
14k views

Is there a Chrome version of Firefox Tilt?

Tilt is a cool new developer-oriented FF extension that lets you visualize a page in 3D. Is there something similar for Chrome?
17
votes
3answers
365 views

Why do add-ons become incompatible when upgrading firefox

My default browser is Chrome, but when I occasionally use Firefox for whatever reason there is often an update to it. Almost every time I update Firefox some of my add-ons become incompatible. Why is ...
17
votes
9answers
6k views

How to save a bookmark in Firefox with POST data?

I would like to save as a Firefox bookmark a page which is not accessible using GET. The only way to retrieve the page is to send some POST data. For example, I would like to bookmark a Chronopost ...
16
votes
6answers
3k views

Chrome or Firefox extension that fixes Google search links [closed]

Is there any extension for a browser that allows you to change the structure of links in Google search, so that it doesn't look like this: http://www.google.com.ph/url?sa=t&source=web&cd=1&...
16
votes
2answers
4k views

Is there a way to search the text of my browsing history in Firefox?

I often find myself in the situation where I know I saw something in a web page recently, but don't remember where. I would therefore like to be able to do a full-text search of the contents of my ...
14
votes
6answers
13k views

Disable/enable the proxy on a tab by tab basis in Firefox

Is it possible to disable/enable the proxy connection on a tab-by-tab basis in Firefox? I can access the internet with the proxy enabled, and I can access our internal servers with the proxy disabled,...
13
votes
3answers
88k views

What is Pando Web Plugin?

Does anyone know what the the Firefox Plugin Pando Web Plugin 1.0.0.1 is?
13
votes
1answer
4k views

Adblock Plus - disabled by default and enable per site

I have Adblock Plus disabled by default at the moment, and I would like to block ads on some sites. Is this possible with Adblock, or do I need another addon?
13
votes
3answers
8k views

Google Chrome extensions in Firefox

Chrome has a significantly more restricted extension API than Firefox; it mainly just consists of content scripts (with background pages) and a couple of hooks for context menus and popups and such. ...
11
votes
8answers
2k views

Next Firefox version: how to *easily* check extension/add-on compatibility?

Question: I currently use Firefox 3.6. Before I install the next version of Firefox (Firefox 4 at this time), is there an easy way to check which of all my installed extensions/add-ons are ...
11
votes
3answers
20k views

Is there a Chrome(ium) alternative for the Firefox “Self-Destructing Cookies” extension?

I am huge fan of the Firefox extension https://addons.mozilla.org/de/firefox/addon/self-destructing-cookies/ and am looking for something like this for chrome. Note: I am not looking for some random ...
11
votes
3answers
3k views

How do I individually mute audio per tab in Chrome or Firefox?

Is there a way (in Chrome/Firefox) to individually mute audio per page/tab? This would be great when listening to music while browsing sites that play audio without asking for user prompt first.
11
votes
3answers
1k views

Setting “allow pages to choose their own fonts” on a per-domain basis in Firefox

Normally I use Firefox with the option "allow pages to choose their own fonts" UNselected, but now and again there's a site I'd like to view using their fonts instead of mine... Is it possible to set ...
10
votes
2answers
1k views

How to stop Firefox from updating?

Anyway here is my problem. I'm currently on beta channel (Firefox 6) which was recently upgraded and broke some extensions. Now I gather those extensions will be upgraded in the future and they'll ...
10
votes
3answers
1k views

How do streaming videos download works?

I use Firefox and the Video DownloadHelper plugin to download videos from YouTube, etc. How do these plugins and sites automatically obtain download links for these videos?
10
votes
8answers
2k views

faster alternative to firefox tab groups

I had about 200 tabs open in about 15 tab groups. Needless to say, Firefox wasn't lightning fast (even with the "don't load tabs until selected" option checked). The solution that dramatically ...
9
votes
2answers
252 views

firefox addons and their silly news tabs

Something like 30% of the addons I have in firefox update every other week and feel the need to pop open a tab about how awesome they are and all the cool things they changed. I just don't care at ...
8
votes
1answer
6k views

How to force install an unverified firefox extension in 41.0b1+?

The latest update to Firefox (41.0b1) aggressively blocks the installation of unverified extensions, namely HTTPS Everywhere and Privacy Badger. How might I be able to force these extensions to ...
8
votes
3answers
2k views

Vimperator - is there any way to edit text?

I'd like to know if there is any way to edit text in Vimperator (for example input boxes or Gmails web interface)? The way one edits text in Vim and can navigate e.g. the use of "p", "yy" and "dd" etc....
8
votes
7answers
563 views

Any Firefox extensions that track how long I stay on a web page?

I want to analyze my web surfing habits, and could use something to monitor how long I stay on a page with seconds precision. Anything like this?
7
votes
3answers
14k views

Browser plugin to resize window for brower testing

When im making a website i work on my 22" external display, which is fine, but to get a better idea of what the site will look like on smaller screens i have to resize my browser window. At the ...
7
votes
2answers
144 views

Which Firefox add-on checks if the latest plugins are installed?

Is there a Firefox add-on that checks if I have the latest version of Adobe Flash, Sun Java, etc installed?
7
votes
5answers
12k views

Hide all images on a page in Firefox (plain text only)

Can I hide all images displayed on a page in Firefox? I want to view the page in plain text only (with no images). Is there any Firefox add-on for this?
7
votes
5answers
10k views

Log HTTP and HTTPS browser traffic, decrypting the latter

Is there a way that I can save all HTTP and HTTPS browser communications (including request, response, full headers and body) to files on my computer? The HTTPS communications must be saved decrypted....
7
votes
3answers
2k views

How to remove search providers in late 2014 Firefox?

The latest Firefox (now v. 34) has changed the way it administers search providers, so that they can be selected or un-selected, also new ones can be added, but they cannot be removed. That is ...
7
votes
2answers
9k views

Send a custom HTTP header to one certain host only

Is there a way (Firefox add-on or about:config setting) to send a custom HTTP header for requests to a certain host? Example: Send the header Foobar: true if (and only if) I request a resource from ...
7
votes
3answers
5k views

How can I spell check web pages from the browser?

How can I spell check web pages when browsing them? I've added the After the Deadline Chrome extension, but it only seems to work on forms and not whole web pages. I'm happy to use Firefox if that ...
7
votes
2answers
3k views

How to stop chrome/firefox downloading a gif?

When I visit any page containing some animated gifs (Google+, 9gag etc), all those seem to start loading. My bandwidth is limited and I don't want those to be downloaded unless I really want to view. ...
6
votes
6answers
11k views

How to disable Flash plugin on Firefox, but with a whitelist? I mean *really* disable it

The background Ok, this is a toughie. I'm a Firefox user, and I don't like Flash ads. They slow down my netbook, they slow down my Macbook, they sometimes play sound or obscure part of the page, all ...
6
votes
3answers
175 views

Best way to use the Firefox search box input to construct a url and navigate to it

I'd like to use the Firefox search field at the top right to automatically navigate to a particular URL based on the value of the search string. Example: If I type "Kangaroo" and hit enter I'd like ...
6
votes
2answers
2k views

How to set up firefox so that a new tab opens next to the currently open tab?

Is there a way (either through add-ons or preference tinkering?) to set up Firefox 17.0.1 (for Mac OS X) to open up new tabs next to the tab I am currently browsing in as opposed to at the end of my (...
6
votes
1answer
2k views

Is there a Firefox extension that prevents websites from detecting what operating system you're using?

Is there a Firefox extension that prevents websites from detecting what operating system you're using? Also, if there isn't a plugin, is it possible to write one? I know I can disable websites from ...
6
votes
4answers
4k views

Firefox 29 + Tree Style Tabs + Tab Mix Plus: Open new tab with double click

After updating to FF29, I can't open a new tab when clicking on the empty area below the tabs. Edit: This is confirmed to be a change made by FF29, no addons have anything to do with it. See answer ...
6
votes
1answer
701 views

Setup Firefox to save .pages as .zip automatically

What do I want to do? I would like Firefox to save files with the .pages extension as .zip files automatically. Scenario You are browsing through your emails and you notice your friend just sent ...
6
votes
1answer
2k views

How to get the Markdown Viewer addon of Firefox to work on Linux?

I've installed the Markdown Viewer Firefox addon, but I cannot get it to work on my Ubuntu installation. Firefox is my browser of choice and I am trying to move to Markdown in Vim as my basic text-...
6
votes
2answers
4k views

Unblocking at element-level in uBlock Origin

There's one crucial feature from ABP that I haven't found in my (one week of) uBlock0 usage - the “Open blockable items” feature that allows me to allow and disallow at the level of page elements. ...
6
votes
1answer
3k views

Disable stylish on certain sites in firefox

I use dark theme in the Firefox, however sometimes I visit several sites that don't need such theme. I want to see them in original style. I found the way to enable specific features per site with : ...
6
votes
1answer
747 views

Profiling add-ons in firefox

One new feature of ie9 I like is that it alerts you to which add-ons are making your browser run slowly. Is there a way to get access to similar information in firefox?
6
votes
2answers
967 views

Multiple search provider boxes in Firefox

I am using 3-5 search providers usually when browsing. However, default search box only allows to manually change search provider and then perform search. I'm looking for the way to have multiple ...
6
votes
4answers
2k views

Delete cookies in Firefox after specific interval of time

Is there any Firefox addon which will delete my all cookies after specific interval of time. I do not want to block any site's cookie; I just want all the cookies to be deleted after every 30 seconds ...
6
votes
1answer
941 views

Custom names for tabs in Firefox?

I want to have custom names for some tabs in latest firefox. I have lots of tabs open and some of them represent different build of the same application. It means that I can see the same favicon and ...
6
votes
2answers
3k views

Google Chrome like omnibar in Mozilla Firefox

How to make Firefox's awesomebar (addressbar) to work like in Chrome? I mean especially search (words search, not URLs) auto complete from search history. This addon ( addons.mozilla.org/en-US/...
5
votes
6answers
6k views

How to invert web pages colour scheme in Firefox?

I use to browse web in a dark room and would prefer if the backgrounds would be dark and text would be light instead of the opposite which is much more common. I suppose this can be achieved with some ...
5
votes
4answers
4k views

How to see a list of all installed Firefox extensions and export it?

I was wondering if there is a functionality or maybe another addon for Firefox were I can export all my addons into a simple list - preferably txt or html. I mean only the names because I start to ...
5
votes
3answers
436 views

How can I auto-select the spellcheck language in Firefox?

Firefox spell-checker is puzzling me. I'd like to auto-select the language, but searching google I've only found this relevant link which suggests this old unmantained addon which just doesn't work (...